Oil dispenser



Dec. 7, 1937. I A, DALE 2,101,468

OIL DISPENSER Filed Sept. 11, 1955 Fig.1. FlrH'lur L. Da/e Patented Dec. 7, 1937 UNITED STATES PATENT OFFICE 2 Claims.

This invention relates to devices for dispensing liquids, and especially to that class adaptedfor use in service stations, for the purpose of storing and dispensing lubricating oil.

The objects of this invention are, first, to provide a device which may be connected up to an air pressure line, whereby the oil is delivered upon the opening of a valve; second, toprovide for the adjustment of the several valves in a series of such dispensers whereby, uniform air pressure being applied to all the said containers, each may be regulated to suit the several types of oils in the separate containers; third, to provide an improved valve whereby the manual pressure appliedto the relief valve closes the said valve before it opens the air-supply valve.

I attain these and other objects by the devices, mechanisms and arrangements illustrated in the accompanying drawing, in which Fig. 1 is a side elevation of my improved oil dispenser, parts being broken away to reveal the interior thereof, and showing it in the act of refilling the auxiliary tank; Fig. 2 is a vertical section of the control valve, showing the parts in their normal positions, permitting therefilling of the auxiliary tank; Fig. 3 is a similar view thereof, showing the parts in the positions for dispensing the oil from the auxiliary tank; Fig.4 is a view, partly in section, of the oil delivery pipe connection to the check valve; and Fig. 5 is a plan view showing a battery of tanks, each adapted to contain a diiferent oil, and all connected to a common air-supply line.

Similar numerals of reference refer to similar parts throughout the several views.

It will be seen by the drawing that each container comprises two compartments, I and 2, one below the other, the upper compartment I comprising the oil storage tank and being open to the air through the hole 3 in its upper Wall, while the lower compartment 2 comprises a comparatively small auxiliary tank which is air-tight and entirely separated from the storage tank.

An air-supply pipe 4-leads from the hereinafter described control valve through the storage tank I and into the upper part of the auxiliary tank 2. An oil delivery pipe 5 extends from near the bottom of the auxiliary tank 2 upward, through the storage tank I, to a suitable nozzle 6. This oil delivery pipe 5 is provided with a side inlet I near the bottom of the storage tank I, and said inlet I is controlled by a check or fiap valve 8 (Fig. 4), so arranged as to permit oil to fiow freely from the storage tank I into the auxiliary or dispensing tank 2, by the pipes 'I and 5, when the pressure in the auxiliary tank 2 is at atmospheric pressure.

The control valve is usually mounted on top of the storage tank I and comprises a cylindrical body 9, having an axial cavity extending completely therethrough. This cavity is in three sections, the central section II] being of smaller diameter than the two end sections II and I2, thereby forming valve seats I3 and I4 on each side of said central cavity III. The cavity I I, into which the pressure line I5, leading from a suitable source of air supply, is led through suitable connections, is provided with a valve I6 adapted to seat itself on the valve seat I3, between this cavity I I and the central cavity II]. This valve It does not fit tightly within the cavity II but a slight air space is provided around its periphery. This valve I6 is mounted on a metal disk II, having a stem I8 adapted to guide it in the cavity II. The valve I6 may be made of fiber or other suitable material, which may be removably attached to the inner disk I1 of the valve. A spring I9 is mounted in the outer cavity II and is adapted to press the valve I6 against the seat I3.

A plug 20 is loosely mounted in the outer portion of the other cavity I2 and. is adapted to be engaged and moved axially by manually actuated means. This plug 20. is provided with a renewable valve 2I on its inner end; the plug 20 fits neatly, but not tightly, in the outer cavity I2. The valve 2|, secured to the inner end of the plug 20, similarly fits in the seat I4 between the outer cavity I2 and the central cavity III. This second valve seat I4 is constructed substantially as shown and comprises a beveled portion 22 and a cylindrical portion. The valve 2| fits neatly in the cylindrical portion I4 and may be moved to press tightly against the beveled portion 22. The air-supply 4, for the auxiliary tank 2, leads from the central cavity II) between the two valve seats I3 and I4-22, and an air exhaust pipe 23 leads from a point slightly to the rear of the valve seat I4 in the cavity I2 and enters the upper end of the storage tank I, or may be led elsewhere, if so desired. I

A push rod 24 is screwed into the above described plug 20, through the valve 2I, and is locked in adjusted position therein by means of a lock-nut 25. This push rod 24 extends into the central cavity III a distance which is controlled by screwing it more or less into the said plug 20. This push rod 24 is adapted to engage the air valve I6, above described, but its length is so adjusted that it does not so engage the said air valve until the valve 2I on the plug 20 has closed the outer or cylindrical part [4 of the valve seat. Further pressure on the said plug opens the air-supply valve l6, permitting the air from the pressure supply pipe [5 to pass into the auxiliary tank 2 by means of the above-described pipe 4. When several of the above-described storage tanks l are placed on the same air-supply line i 5, it is necessary to adjust the lengths of the several push rods 24 so that the same pressure in the air-supply pipe l5 (which may be from 15 to pounds per sq. inch). will act on the several kinds of oil in the said tanks 2 with substantially equal effect, independent of their viscosity, so that for the heavier oils the said push rod 24 is screwed out further than for the lighter oils,

thereby opening the air valve I6 wider for said heavier oils.

A handle 26 is pivotally mounted on'an exten sion lug 27, in front of the said control valve 9, said handle 26 having a suitable lug 28 thereon, adapted to engage the end of the said plug 20 of the valve, so that by pushing on the said. handle 2'6, the valves above described are operated. a

' When this handle26 isthus pushed to open the air valve I5, as above described, (Fig. 3) the air under pressure will enter the top of the dispensing tank 2 and will force the oil therein out through the oil delivery pipe. 5. While this. is being done, the check valve 8 automatically closes thus insuring the delivery of the oilfrom the auxiliary tank2 tothe nozzle 6. As soon-however, as the pressure is removed from the handle 26 the air pressure and the spring is act to close the air valve 16; and the plug 20 and its valve 2| are pushed outward by the pressure which is in the air line 4 leading to the auxiliary tank 2. Thus the second valve 2| is opened and connection is made between the air pipe 4, leading to the auxiliary tank 2, and the air exhaust 23, thus permitting the air in the auxiliary tank 2 to escape and the pressure thereof to drop to atmospheric pressure, with the result that the 'oil in the storage tank I then fiows freely through the check valve 8 into the auxiliary tank 2 until the said tank 2 is full;

Therefore it is evidentthat the auxiliary tank 2 is always ready with oil, so that as soon as the handle 26 is pressed, oilwill be delivered from the nozzle 6, and that as soon as the handle is released, the auxiliary tank 2 is immediately re filled.

Although Iliave shown that the auxiliary tank 2 is made integral with the storage tank I, it is, of course, understood that it may be a separate tank located at any convenient point so long as it is in position to be automatically filled by gravity or otherwise from the storage tank.

It is evident that many variations may be made in my invention without departing from the spirit thereof as outlined in the appended claims.

What I claim and desire to secure by Letters Patent is:--

1. A control apparatus for an oil dispenser,

having an air pressure line, an air-supply pipe, and a relief pipe attached thereto and comprising a. fixed body having three connected chambers therein, the air pressure line entering the first automatic valve, whereby said automatic. valve is engaged, after the said plug valve has closed ofi connection between the air-supply pipe and the relief pipe, to open said automatic valve a predetermined amount toconnect the air pressure line with the air-supply pipe.

2. A control apparatus as set forth in claim 1 wherein said relief pipe enters the third chamber at a. point well removed from the valve seat therein; and wherein said plug valve passes over and closes said relief pipe before it engages its said valve seat, whereby said relief pipe is closed prior to the admission of air pressure to said air supply pipe by the opening of said automatic valve; whereby the said relief pipe is closed by said plug valve before it ceases its forward movement.

ARTHUR L. DALI. 

